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math.CO2022
Spectral faux trees
Steve Butler, Elena D'Avanzo, Rachel Heikkinen +3
A spectral faux tree with respect to a given matrix is a graph which is not a tree but is cospectral with a tree for the given matrix. We consider the existence of spectral faux tr…
math.CO2022
Complements of coalescing sets
Steve Butler, Elena D'Avanzo, Rachel Heikkinen +3
We consider matrices of the form , with being the diagonal matrix of degrees, being the adjacency matrix, and a fixed value. Given a graph and $B\subseteq V(G…